EP 3833413 A1 20210616 - ROTARY PLUNGER PUMP SUBSYSTEMS
Title (en)
ROTARY PLUNGER PUMP SUBSYSTEMS
Title (de)
DREHKOLBENPUMPENSUBSYSTEME
Title (fr)
SOUS-SYSTÈMES DE POMPE À PISTON ROTATIF
Publication
Application
Priority
- US 201962891600 P 20190826
- US 201962895140 P 20190903
- US 2020047331 W 20200821
Abstract (en)
[origin: WO2021041184A1] A rotary sub-assembly for pumping of fluid is provided. The sub-assembly includes a hollow body defining a cavity (230) having a longitudinal axis (201) the body comprising a cavity wall (224) with at least two ports (226, 228) passing therethrough. At least a portion of the cavity has a non-circular cross-section such that a first constant or varying radial distance from the longitudinal axis to inwardly-offset segments of the cavity wall surrounding the two ports is less than a second constant or varying radial distance from the longitudinal axis to second segments of the cavity wall spaced apart from the two ports. A rotatable plunger (302) is housed in the cavity. The plunger is sized and shaped such that a side wall of the plunger can establish a liquid-tight seal against the inwardly-offset segments of the cavity wall, but does not establish a liquid-tight seal with the second segments of the cavity wall spaced apart from the two ports.
IPC 8 full level
A61M 5/142 (2006.01); F04B 7/06 (2006.01)
CPC (source: CN EP US)
A61M 5/14216 (2013.01 - CN EP US); F04B 7/06 (2013.01 - CN EP US); A61M 2205/103 (2013.01 - CN US); A61M 2205/106 (2013.01 - CN US); F04B 2201/02011 (2013.01 - CN US)
Citation (search report)
See references of WO 2021041184A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2021041184 A1 20210304; AU 2020340265 A1 20220317; AU 2020340265 B2 20230615; CA 3148006 A1 20210304; CA 3148006 C 20231212; CN 114450046 A 20220506; CN 114450046 B 20231208; EP 3833413 A1 20210616; EP 3833413 B1 20220202; ES 2907488 T3 20220425; JP 2021529069 A 20211028; JP 7015966 B2 20220203; US 11344669 B2 20220531; US 2021353853 A1 20211118
DOCDB simple family (application)
US 2020047331 W 20200821; AU 2020340265 A 20200821; CA 3148006 A 20200821; CN 202080060344 A 20200821; EP 20768163 A 20200821; ES 20768163 T 20200821; JP 2021513837 A 20200821; US 202017259640 A 20200821